What Is a Quantitative Titration?

Titration is a means of quantitative analysis and a chemical experiment operation. It determines the content of a certain solute by the quantitative reaction of two solutions. It indicates the end of the titration according to the color change of the indicator, and then visually observes the volume consumed by the standard solution to calculate the analysis result.

The titration process requires a quantitative reaction. This reaction must be complete and the rate must be fast, that is,

For titration, clamp the burette vertically on the burette holder.

If an acid tube is used, the ring finger of the left hand and the little finger are bent toward the palm of the hand, and it is lightly pressed against the outlet tube, and the remaining three fingers are used to control the rotation of the piston. However, care should be taken not to pull the piston outwards to prevent the water from leaking out of the piston; nor to buckle it inwardly too much to prevent the piston from turning difficult and not operating freely.

If an alkaline tube is used, the left ring finger and

After filling or releasing the solution, you must wait 1 to 2 minutes for the solution attached to the inner wall to flow down, and then take a reading. If the solution is released slowly (for example, titration to the final stage, when only adding half a drop of solution each time), wait 0.5 to 1 minute to read. Before each reading, check whether there are water drops on the tube wall and whether there are air bubbles in the tube tip.

The second digit after the decimal point must be read, that is, an estimate of 0.01 mL is required. Note that the width of the tick mark itself should be taken into account when estimating the reading.

Before taking an initial reading, the solution hanging from the tip of the tube should be removed. When the titration reaches the end point, the piston should be closed immediately, and care should be taken not to allow the solution in the burette to flow out slightly, otherwise the final reading will include the half-dropped solution. Therefore, before reading the final reading, you should pay attention to check whether the solution is suspended at the tip of the outlet pipe. ^[2]